two dry season campaigns ( 128 ##3 – 85 ) later , the mongols had occupied down to tag ##au ##ng and han ##lin , forcing the burmese king to flee to lower burma . the mongols organized northern burma as the province of zheng ##mian . ceasefire negotiations began in 128 ##5 , and ended with nara ##thi ##ha ##pate finally agreeing to submit in june 128 ##6 . the burmese embassy , received by the emperor in beijing in january 128 ##7 , agreed to a treaty that acknowledged the su ##zer ##aint ##y of the yuan dynasty or the mongol empire over the pagan empire and annual payments in taxes to the yunnan government in exchange for the evacuation of mongol troops from northern burma
two dry season campaigns ( 1283 – 85 ) later, the mongols had occupied down to tagaung and hanlin, forcing the burmese king to flee to lower burma. the mongols organized northern burma as the province of zhengmian. ceasefire negotiations began in 1285, and ended with narathihapate finally agreeing to submit in june 1286. the burmese embassy, received by the emperor in beijing in january 1287, agreed to a treaty that acknowledged the suzerainty of the yuan dynasty or the mongol empire over the pagan empire and annual payments in taxes to the yunnan government in exchange for the evacuation of mongol troops from northern burma